{"icao":"KMTN","name":"Martin State Airport","lat":39.3257,"lon":-76.4138,"country":"US","tz":"America/New_York","updated":"2026-09-04T14:25Z","window":{"start":"2016-01-01","through":"2026-08-15"},"climatology":{"subCat1HoursPerYear":36,"bandDefinition":"visibility < ~800 m OR ceiling < 200 ft","fogSeasonPeakMonths":["December","January"],"monthlyHours":[8,4,4,1,2,0,0,0,0,3,4,10],"medianEventHours":1,"season":{"summary":"Fog season runs October through March, peaking in December; fog is mostly a 5 AM\u20139 AM phenomenon; typically thinning out by 10 AM; a typical event lasts about 1 hour (local time, 10-year average).","months":["January","February","March","October","November","December"],"timeOfDay":"5 AM\u20139 AM","typicallyClearsBy":"10 AM"}},"forecast":{"covered":true,"public":false,"cycle":"2026-09-04T13:00:00Z","guidanceSignal":false,"wording":"No fog signal in NWS guidance for the next 48 hours. dense fog (visibility under a mile) is rare here in September."},"links":{"page":"https://fogatlas.org/fog/kmtn/","liveForecastApi":"https://fogatlas.org/api/forecast","liveObservationsApi":"https://fogatlas.org/api/metar?ids=KMTN","hourlyClimatologyDetail":"https://fogatlas.org/data/detail/KMTN.json","verification":"https://fogatlas.org/fog/scorecard/","methodology":"https://fogatlas.org/#methodology"}}